prolactinoma/tyrosine

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בחר סוג מיון

עמוד 1 מ 32 תוצאות

[Gene therapy of rat prolactinomas mediated by adenoviral vectors with rat tyrosine hydroxylase gene].

רק משתמשים רשומים יכולים לתרגם מאמרים

התחבר הרשם

OBJECTIVE To investigate the potential of gene therapy of rat prolactinomas mediated by adenoviral vectors with a gene encoding rat tyrosine hydroxylase. METHODS Recombinant replication-deficient adenovirus named Ad-GFP-TH with rat TH-cDNA and control adenovirus named Ad-GFP were constructed by

Transfection of human lactotroph adenoma cells with an adenovirus vector expressing tyrosine hydroxylase decreases prolactin release.

רק משתמשים רשומים יכולים לתרגם מאמרים

התחבר הרשם

Pituitary adenomas are common intracranial neoplasms, for which surgery and radiation are usually not curative. In attempting to develop gene therapy as a better approach to treating pituitary adenomas, we chose lactotroph adenomas as a model. The rationale for the use of this model is based on the

PET studies with L-[1-11C]tyrosine, L-[methyl-11C]methionine and 18F-fluorodeoxyglucose in prolactinomas in relation to bromocryptine treatment.

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התחבר הרשם

Aspects of metabolism in prolactinomas were investigated by positron emission tomography using L-[1-11C]tyrosine, L-[methyl-11C]methionine and 18F-fluorodeoxyglucose (18FDG). Using L-[1-11C]tyrosine, four patients were monitored prior to and 18 h after an injection of 50 mg bromocriptine. At 18 h

Regulated, adenovirus-mediated delivery of tyrosine hydroxylase suppresses growth of estrogen-induced pituitary prolactinomas.

רק משתמשים רשומים יכולים לתרגם מאמרים

התחבר הרשם

Prolactin-secreting adenomas are one of the most common types of intracranial neoplasm found in humans. The modalities of clinical treatment currently in use include D(2)-dopamine receptor agonists, surgery, and radiotherapy, and the success rates for treatment are good. However, there are

ErbB receptor-driven prolactinomas respond to targeted lapatinib treatment in female transgenic mice.

רק משתמשים רשומים יכולים לתרגם מאמרים

התחבר הרשם

As ErbB receptors are expressed in prolactinomas and exhibit downstream effects on prolactin (PRL) production and cell proliferation, we generated transgenic mice using a PRL enhancer/promoter expression system to restrict lactotroph-specific expression of human epidermal growth factor receptor

Elevated levels of circulating betahydroxybutyrate in pituitary tumor patients may differentiate prolactinomas from other immunohistochemical subtypes.

רק משתמשים רשומים יכולים לתרגם מאמרים

התחבר הרשם

The diagnosis of various histological subtypes of pituitary tumors is made using serum based hormone panel test. However, certain subtypes secrete more than one hormone, making the diagnosis ambiguous. Here, we performed ¹H-NMR based metabolomic analysis of serum and whole-blood from

Suppression of tyrosine kinase activity inhibits [3H]thymidine uptake in cultured human pituitary tumor cells.

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התחבר הרשם

Tyrosine kinases are involved in the phosphorylation of proteins that regulate cell growth and proliferation. The mitogenic effect of several growth factors requires tyrosine kinase activity of their receptors. The effect of inhibition of tyrosine kinase activity on thymidine uptake into cultured

Tyrosine hydroxylase messenger RNA in the hypothalamus, substantia nigra and adrenal medulla of old female rats.

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התחבר הרשם

The effects of aging in the female rat were analyzed in terms of tyrosine hydroxylase (TH) gene expression and serum prolactin levels. The number of tuberoinfundibular dopaminergic (TIDA) neurons and the concentration of TH mRNA per cell was greater in 16- to 18-month-old rats than in 25-month-old

Estradiol-induced prolactinomas: differential effects on dopamine in posterior pituitary and median eminence.

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התחבר הרשם

Prolactin release is inhibited by dopamine and stimulated by estradiol. Dopamine is released from nerve terminals in the median eminence and posterior pituitary. Estradiol may act directly on the anterior pituitary or by modulating the two dopaminergic systems. Estradiol treatment induces the

The importance of dopamine in the pathogenesis of experimental prolactinomas.

רק משתמשים רשומים יכולים לתרגם מאמרים

התחבר הרשם

The factors responsible for the production of prolactin-secreting tumors are obscure. One hypothesis, that chronic loss of dopamine control from the hypothalamus may be associated with prolactinoma formation, was tested. Female adult Fischer 344 rats were subjected to ovariectomy and were then given

Heregulin regulates prolactinoma gene expression.

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התחבר הרשם

To investigate the role of p185(her2/neu)/ErbB3 signaling in pituitary tumor function, we examined these receptors in human prolactinomas. Immunofluorescent p185(her2/neu) was detected in almost all (seven of eight), and ErbB3 expression in a subset (four of eight) of tumors (seven adenomas and one

HER2/ErbB2 receptor signaling in rat and human prolactinoma cells: strategy for targeted prolactinoma therapy.

רק משתמשים רשומים יכולים לתרגם מאמרים

התחבר הרשם

Dopamine agonist resistance or intolerance is encountered in approximately 20% of prolactinoma patients. Because human epidermal growth factor receptor 2 (HER2)/ErbB2 is overexpressed in prolactinomas and ErbB receptor ligands regulate prolactin (PRL) gene expression, we tested the role of

Aggressive prolactinomas: how to manage?

רק משתמשים רשומים יכולים לתרגם מאמרים

התחבר הרשם

Aggressive prolactinomas are defined as radiologically invasive tumors which cannot be cured by surgery, and that have an unusually rapid rate of tumor growth despite dopamine agonist treatment and surgery. In some cases, metastasis occurs, defining prolactin carcinoma which is the

Dopamine agonist resistant prolactinomas: any alternative medical treatment?

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התחבר הרשם

Consensus guidelines recommend dopamine agonists (DAs) as the mainstay treatment for prolactinomas. In most patients, DAs achieve tumor shrinkage and normoprolactinemia at well tolerated doses. However, primary or, less often, secondary resistance to DAs may be also encountered representing

Prolactinoma ErbB receptor expression and targeted therapy for aggressive tumors.

רק משתמשים רשומים יכולים לתרגם מאמרים

התחבר הרשם

As ErbB signaling is a determinant of prolactin synthesis, role of ErbB receptors was tested for prolactinoma outcomes and therapy. The objective of this study was to characterize ErbB receptor expression in prolactinomas and then perform a pilot study treating resistant prolactinomas with a

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